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Finding the Fourth Proportional to 607,398.60, 911,141.10 and 186,673.80

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Solution

The fourth proportional to 607,398.60, 911,141.10 and 186,673.80 is: 280,023.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,398.60 : 911,141.10 = 186,673.80 : x
  2. Step 2: Convert to fraction form
    607,398.60/911,141.10 = 186,673.80/x
  3. Step 3: Cross multiply
    607,398.60x = 911,141.10 × 186,673.80
  4. Step 4: Simplify right side
    607,398.60x = 170,086,171,473.18
  5. Step 5: Solve for x
    x = 170,086,171,473.18/607,398.60
  6. Step 6: Final answer
    x = 280,023.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.